<template>
     <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item >首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable="" @clear="queryUsers">
            <el-button slot="append" icon="el-icon-search" @click="queryUsers"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="dialogVisble">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table  border stripe :data="userList">
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" >
            <!--  scope：接收当前一行的数据-->
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="addRolesToUser(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination  @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[1, 2, 5, 10]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户"  width="50%" :visible.sync ="dialogVisible" @close = 'resetForm'>
      <!-- 内容主体区域 -->
      <el-form  label-width="70px" :model="addForm" ref="addFormRef" :rules="formDataRules">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username" ></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password" type="password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email" ></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile" ></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="add">确 定</el-button>
      </span>
    </el-dialog>

     <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户"  width="50%" :visible.sync ="editDialogVisible" @close = 'resetEditForm'>
        <!-- 内容主体区域 -->
        <el-form  label-width="70px" :model="editForm" ref="editFormRef" :rules="formDataRules">
            <el-form-item label="用户名" prop="username">
            <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
            <el-input v-model="editForm.email" ></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
            <el-input v-model="editForm.mobile" ></el-input>
            </el-form-item>
        </el-form>
        <!-- 底部区域 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="edit">确 定</el-button>
        </span>
    </el-dialog>

    <!-- 分配用户角色对话框 -->
      <el-dialog title="分配角色"  width="50%" :visible.sync ="roleDialogVisible" @close = 'resetRoleForm'>
        <!-- 内容主体区域 -->
       <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select  placeholder="请选择" v-model="selectRoleId">
            <el-option 
            v-for="item in rolesList" :key="item.id" 
            :label="item.roleName" 
            :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="roleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleForUser">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
    data(){
        //自定义校验规则
        var checkEmail = (rule,value,cb)=>{
        // 验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

            if (regEmail.test(value)) {
                // 合法的邮箱
                return cb()
            }

            cb(new Error('请输入合法的邮箱'))
        }

        var checkMobile = (rule,value,cb)=>{
        // 验证手机号的正则表达式
            const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

            if (regMobile.test(value)) {
                return cb()
            }
            cb(new Error('请输入合法的手机号'))
        }
        return{
            queryInfo:{
                query:'',
                pagenum: 1,
                pagesize: 2
            },
            userList: [],
            total:0,
            //对话框的显示与隐藏
            dialogVisible:false,
            editDialogVisible:false,
            //角色分配对话框
            roleDialogVisible:false,
            //表单数据
            addForm:{
                id:'',
                username:'zhao',
                password:'123456',
                email:'123@qq.com',
                mobile:'13566298888'
            },
            //查询表单数据
            editForm:{},
            //角色列表
            rolesList:'',
            userInfo:{},
            selectRoleId :'',
            //校验规则
            formDataRules:{
                username:[
                   { required: true, message: '请输入用户名', trigger: 'blur' },
                    {
                        min: 3,
                        max: 10,
                        message: '用户名的长度在3~10个字符之间',
                        trigger: 'blur'
                    }
                ],
                password:[
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    {
                        min: 6,
                        max: 15,
                        message: '用户名的长度在6~15个字符之间',
                        trigger: 'blur'
                    }
                ],
                email:[
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur' }            
                ],
                mobile:[
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
            }
        }
    },
    methods:{
       async queryUsers(){
            const {data:res} = await this.$http.get('users',{params:this.queryInfo})
            if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
               this.userList =  res.data.users;
               this.total = res.data.total;        
        },
        handleSizeChange(newSize){
            this.queryInfo.pagesize = newSize;
            this.queryUsers();
        },
        handleCurrentChange(newPage){
            this.queryInfo.pagenum = newPage;
            this.queryUsers();
        },
        async userStateChanged(userInfo){
           const {data: res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.status}`)
            if(res.meta.status !== 200) {
                userInfo.mg_state = ! userInfo.mg_state;
                return this.$message.error('更新用户状态失败！')
            }
            this.$message.error('更新用户状态成功！')
        },
        dialogVisble(){
            this.dialogVisible = true;
        },
        resetForm(){
            this.$refs.addFormRef.resetFields();
        },
        add(){
            //先校验数据再提交
            this.$refs.addFormRef.validate(async (validate)=>{
               if(!validate) return;
               const {data:res} = await this.$http.post("users",this.addForm);
               if(res.meta.status !== 201) return this.$message.error(res.meta.msg);  
               this.$message.success('用户添加成功！')       ;
               this.dialogVisible = false;
               this.queryUsers();
           
            })
        },
       async showEditDialog(id){
           
            //查询用户信息并显示
            const {data: res} = await this.$http.get('users/'+id);
            if(res.meta.status !==200){
                return this.$message.error('用户查询失败！')
            }
            this.editForm = res.data;
            this.editDialogVisible = true;
        },
        //更新数据
        edit(){
                //先校验数据再提交
            this.$refs.editFormRef.validate(async (validate)=>{
               if(!validate) return;
               const {data:res} = await this.$http.put("users/"+this.editForm.id,this.editForm);
               if(res.meta.status !== 200) return this.$message.error(res.meta.msg);  
               this.editDialogVisible = false;
               this.queryUsers();
               this.$message.success('更新用户成功！') ;
           
            })
        },
        //重置修改表单
        resetEditForm(){
            this.$refs.editFormRef.resetFields();
        },
       async removeUserById(id){
            //先询问再删除
           const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'}).catch(err=>err)
            //如果点击确定返回confirm文本，点击取消则异常
            if(confirmResult !=='confirm'){
                return this.$message.info('已经取消删除！');    
            }
            const {data:res} = await this.$http.delete('users/'+id);
            if(res.meta.status != 200){
                return this.$message.error(res.meta.msg)
            }
            this.queryUsers();
            this.$message.success('删除用户成功！');
        },
        //分配角色对话框关闭功能
        resetRoleForm(){
          this.roleDialogVisible= false;
          this.selectRoleId = '';
          this.userInfo = ''
        },
        //打开分配角色对话框并显示原数据
        async addRolesToUser(userInfo){
          this.userInfo = userInfo
          const {data:res} = await this.$http.get('roles')
          if(res.meta.status != 200){
                return this.$message.error(res.meta.msg)
            }
          this.rolesList = res.data;
          this.$message.success(res.meta.msg);  
          this.roleDialogVisible = true;
        },
        //保存分配的角色
        async saveRoleForUser(){
          if(!this.selectRoleId){
            return this.$message.error("请选择角色！")
          }
          const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectRoleId})
         if(res.meta.status != 200){
                return this.$message.error(res.meta.msg)
          }
        this.queryUsers();
        this.$message.success(res.meta.msg); 
        this.roleDialogVisible = false;
        }

    },
    created(){
        this.queryUsers();
    }
}
</script>

<style lang="less" scoped>

</style>